package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import java.util.List;

public interface ShoppingCartMapper {
    ShoppingCart selectBy(ShoppingCart shoppingCart);

    /**
     * 新增购物车
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart values (null, #{name}, #{image}, #{userId}, #{dishId}, #{setmealId}, #{dishFlavor}," +
            " #{number}, #{amount}, #{createTime})")
    void insert(ShoppingCart shoppingCart);

    /**
     * 根据id修改购物车数据
     * @param cart
     */
    @Update("update shopping_cart set number = #{number} where id = #{id}")
    void update(ShoppingCart cart);

    /**
     * 根据用户id查询购物车
     * @param userId
     * @return
     */
    @Select("select * from shopping_cart where user_id = #{userId}")
    List<ShoppingCart> list(Long userId);

    /**
     * 根据用户id 菜品id 清空购物车
     * @param userId
     */
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void deleteByUserId(Long userId);

    @Delete("delete from shopping_cart where id = #{id}")
    void deleteById(Long id);
}
